<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
        .inputBox {
        width: 398px;
        height: 56px;
        padding: 3px;
        background-image: linear-gradient(to left, #DED8F8, #4F3AA0);
        border-radius: 14px;
        box-sizing: border-box;
    }
    
    .inputBox input {
        width: 100%;
        height: 100%;
        font-size: 25px;
        padding-left: 10px;
        padding-right: 10px;
        box-sizing: border-box;
        background: #0C0566;
        border: none;
        border-radius: 14px;
        outline: none;/* 取消选中时的边框 */
        color: #7F6FBE;
    }
    </style>
<body>
    <div class="inputBox">
        <input type="text" placeholder="请输入您要查询的客户" />	
    </div>
    
</body>
</html>